CN208252102U - A kind of super-heavy oil deposit exploitation mechanism - Google Patents
A kind of super-heavy oil deposit exploitation mechanism Download PDFInfo
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- CN208252102U CN208252102U CN201820833157.6U CN201820833157U CN208252102U CN 208252102 U CN208252102 U CN 208252102U CN 201820833157 U CN201820833157 U CN 201820833157U CN 208252102 U CN208252102 U CN 208252102U
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- well
- microwave
- horizontal well
- exploitation
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Abstract
The utility model discloses a kind of super-heavy oil deposits to exploit mechanism, including at least one set of exploitation group, every group of exploitation group include horizontal well and straight well, and horizontal well includes upper horizontal well and lower horizontal well, and horizontal well has horizontal segment and vertical section；Straight well is arranged near horizontal well；Installation microwave launcher and microwave reflection device on the outside of the borehole wall of straight well, microwave is between the microwave reflection device between straight well two-by-two toward interflection.It is used the utility model has the beneficial effects that reducing quantity of steam, exploitation reducig cost；Can rapidly pre-warming stratum, shortening gets through exploitation channel time, while promoting unit time yield；It is wider to heat formation volumes；Formation temperature is monitored at any time, is adjusted microwave power and is realized that vapor chamber develops according to given position, size and shape, and makes vapor chamber uniform expansion.
Description
Technical field
The utility model relates to super heavy oil recovery fields, exploit mechanism more particularly, to a kind of super-heavy oil deposit.
Background technique
Steam assisted gravity drainage techniques (SAGD) are in Canadian oil-sand mining area, the Liaohe Oil Field in China, Xinjiang Oilfield etc.
The heavy crude reservoir on ground is applied successfully.Its principle is that two mouthfuls of parallel up and down water horizontal wells are disposed in same oil reservoir, on top
High-quality steam is injected in steamed well, the upward onlap of steam forms vapor chamber in the earth formation, with the continuous injection of steam, steams
Heat exchange occurs for crude oil of the vapour chamber constantly upwards and in sideways expansion, with oil reservoir.The viscosity of crude being heated reduces, with condensed water
It flows downward, is produced from the horizontal production well of oil reservoir lower part under the effect of gravity.SAGD exploitation is divided into two stages: starting rank
Section and production phase；Startup stage needs to inject steam to horizontal well, and steam recycles in Liang Koujing, and reservoir mainly passes through hot biography
It leads to transmit heat；With post-equalization pressure-raising, pressure difference between well is formed between Liang Jing, upper horizontal well is steamed well, lower horizontal well
It is producing well, steamed well pressure is higher than producing well, flows crude oil between well toward producing well；Following top steamed well annular space
Stop drain, lower part producing well stops steam injection, is transferred to the complete SAGD production phase.
The target of loop preheat phase is in the shortest time, to be evenly heated steamed well with producing well and be connected to, and note steams
Drain path is established between vapour well and producing well.For conventional steam injected cycle preheating, in steamed well and production well shaft
The long oil pipe that horizontal segment tiptoe is protruded into equal tripping in one protrudes into the short oil pipe of horizontal segment heel with one, and steam is respectively from top note
Long oil pipe in steam well and lower part production well shaft injects, then respectively out of top steamed well and lower part production well shaft
The extraction of short oil pipe.Steamed well and life are heated by heat transfer, thermal convection and the heat radiation effect between injection steam and oil reservoir
The oil reservoir between well is produced, reduces viscosity of crude to 150 centipoises hereinafter, with preferable mobility, thus being transferred to SAGD
Crude oil energy smooth flow and drain path is formed after production phase, in the oil reservoir between steamed well and producing well, so that steam
Chamber can constantly extend, crude oil can constantly under let out and be plucked out of.But conventional steam injected cycle preheating method, it is thermally conductive by oil reservoir
The influence of the thermal physical property parameters such as rate, thermal diffusion coefficient, it is slow that straight steam cycle preheats heating speed, it usually needs steam injected cycle is pre-
Hot 150-300 days, viscosity of crude can be only achieved 150 centipoises or less in oil reservoir between injection-production well.It will be consumed in loop preheat phase big
The steam of amount and a large amount of thermal energy, cost are high.After circulation preheating is transferred to normal SAGD production, with the SAGD time started
Extend, net horizontal section often will appear the problem for inhaling that vapour is uneven, development degree is low along journey, and due to vapour cavity pressure
Can all occur the phenomenon that gas is along high permeability formation channelling between reservoir and well.
It proposes in a kind of recovery method of microwave-assisted solvent extraction viscous crude of Publication No. CN103244089A thick
Horizontal flooding pattern structure is arranged in oil reservoir mining area, and wherein upper water horizontal well is solvent injection well, and lower horizontal well is production
Well；Microwave occurrence of equipment is disposed in upper water horizontal well well head and well, and is become according to the horizontal segment of upper water horizontal well along Cheng Wendu
Change the power for adjusting microwave occurrence of equipment.But the program does not solve the problem of tradition SAGD, first is that the official website of the arrangement of microwave
It is only confined in horizontal well, does not give full play to microwave heating to the control range of heterogeneity ground layer for heating；Second is that being general
In the case of upper horizontal well protrude among oil reservoir, the problem of traditional SAGD mode has is exactly the temperature above horizontal-well network
Etc. true physical chemistry situation especially temperature be it is unknown, can only be calculated according to rough experience or simulation.It is open
Number for CN107420079A a kind of dual horizontal well SAGD viscous crude exploitation mechanism, structure includes dual horizontal well, and installation
Microwave emission and reflection unit between horizontal well, microwave energy are fully absorbed between this well by stratum.But the program is deposited
Smaller in circulation heat range, horizontal-well network upper area temperature is also unknown.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of super-heavy oil deposits to exploit mechanism, it is intended to shorten SAGD
The time of loop preheat phase, while coverage area is intervened in the heating to oil reservoir for greatly improving horizontal-well network, is reached shortening and is thrown
The time is produced, exploitation yield is improved and extends mining time.
To achieve the goals above, the utility model adopts the following technical solution: a kind of super-heavy oil deposit exploitation mechanism, packet
At least one set of exploitation group is included, every group of exploitation group includes:
Horizontal well comprising upper horizontal well and lower horizontal well, horizontal well have horizontal segment and vertical section；
The exploitation mechanism further includes straight well, and straight well is arranged near horizontal well；Microwave is installed on the outside of the borehole wall of straight well
Emitter and microwave reflection device, microwave is between the microwave reflection device between straight well two-by-two toward interflection.
Further, microwave launcher and microwave reflection device are installed on the outside of the borehole wall of the horizontal segment, microwave exists
Toward interflection between microwave reflection device between upper horizontal well and lower horizontal well.
Further, microwave launcher and microwave reflection device are installed on the outside of the borehole wall of the vertical section, microwave exists
Toward interflection between microwave reflection device between vertical section and the straight well for closing on vertical section.
Further, the direction of the launch of the microwave launcher is adjustable, and the reflection direction of microwave reflection device is adjustable
Section.
Further, the microwave launcher connects ground control equipment with microwave reflection device.
Further, the induction for acquiring stratum physical and chemical state is installed on the outside of the straight well and/or the vertical section borehole wall
Device.
Further, temperature sensing device is installed on the outside of the straight well and/or the vertical section borehole wall.
Compared with prior art, the utility model has the beneficial effects that:
1. straight well net and horizontal-well network are both provided with microwave heating, reduce the use of traditional SAGD method quantity of steam, subtract
Cost of winning is lacked；
2. Microwave emission and microwave reflection device make microwave energy almost all by formation absorption between certain well, can be fast
The pre- hot formation of speed, greatly shortens the time for getting through exploitation channel, while promoting the yield of unit time；
3. the microwave heating of straight well net makes the range for heating stratum wider, shortens production time and improve crude oil production
Amount；
4. straight well net and the temperature inductor of horizontal-well network arrangement can monitor the temperature on stratum at any time, can Power Regulation using microwave
Rate size develops according to given position, size and shape according to realization vapor chamber the case where stratum, while making vapor chamber uniform
Extension.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structure schematic top plan view of the utility model；
Fig. 3 is the well pattern assembling structure schematic diagram of the utility model；
Description of symbols: 1- horizontal well；Horizontal well under 2-；The upper horizontal well of 3-；4- vertical section；5- horizontal segment；6- straight well；
7- ground control equipment；8- microwave launcher；9- microwave reflection device；10- exploitation group.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention
Specific embodiment of the present utility model, but the protection scope of the utility model be not limited to it is as described below.
As depicted in figs. 1 and 2, the utility model provides a kind of super-heavy oil deposit exploitation mechanism, including at least one set is opened
Group 10 is adopted, every group of exploitation group 10 includes horizontal well 1 and straight well 6；Horizontal well 1 comprising upper horizontal well 3 and lower horizontal well 2, it is horizontal
Well 1 has horizontal segment 5 and vertical section 4；Straight well 6 is arranged near horizontal well 1；Microwave hair is installed on the outside of the borehole wall of straight well 6
Injection device 8 and microwave reflection device 9, microwave is between the microwave reflection device 9 between straight well two-by-two toward interflection.It needs to illustrate
, in order to guarantee crude oil yield and stablize supply, reservoir exploitation all needs to set up well pattern, and horizontal well 1 and straight well 6 are
One group of exploitation group 10, exploitation group 10 can be in parallel throughout establishment well patterns；Secondly, the quantity of straight well 6 according to the length of horizontal segment 5 and
Microwave emission power is arranged, and typical 5 length of horizontal segment has tens to hundreds of meters, typical embodiment is on horizontal segment 5
Ten meters of distance or so between straight well 6；But can inspire, Microwave emission power is bigger, and the distance between straight well 6 can select
It selects bigger.The reflection of specific microwave is arranged between straight well 6 two-by-two, guarantees that the maximum of microwave utilizes；Certain the utility model
It is not precluded on the outside of production zone and arranges microwave heating, certain exploitation channel can be formed on the outside of production zone.Between well
After connection, not using steam as major heat source, but the microwave generated with device, first is that microwave is controllable, second is that steam
Be diffused in that inhomogeneous formation is non-directional, specifically come be it is original aqueous in microwave heating stratum, water encounters crude oil after gasification
Condensation, the rapid vaporization after absorbing microwave energy again after condensation, will not as the excessive limitation of traditional SAGD generation vapour cavity pressure,
Traditional SAGD can seriously affect production, third is that the price of steam is more expensive because of the excessive generation channeling of the pressure of vapor chamber.
Preferably, microwave launcher 8 and microwave reflection device 9 are installed on the outside of the borehole wall of the horizontal segment 5, microwave exists
Toward interflection between microwave reflection device 9 between upper horizontal well 3 and lower horizontal well 2.Lower horizontal well 2 is recovery well, so
Exploitation channel is quickly formed between 1 well of horizontal well, when accelerating the formation of vapor chamber to go into operation conducive to shortening from upper horizontal well 3 injection steam
Between, while the crude oil above horizontal well also can flow into recovery well by the exploitation channel in this region in time.
Preferably, microwave launcher 8 and microwave reflection device 9 are installed on the outside of the borehole wall of the vertical section 4, microwave exists
Toward interflection between microwave reflection device 9 between vertical section 4 and the straight well 6 for closing on vertical section 4.This structure is vertical section 4
The function of straight well 6 is acted as, the expense for beating a bite straight well 6 can be saved, when setting up well pattern, so that it may which many straight wells are beaten in saving
6 expense.
Preferably, the induction of acquisition stratum physical and chemical state is installed on the outside of 4 borehole wall of the straight well 6 and/or vertical section
Device is specifically equipped with temperature sensing device on the outside of 4 borehole wall of the straight well 6 and/or vertical section.Temperature sensing device
Effect is exactly the advantages of giving full play to microwave heating, because microwave heating is power-adjustable, then among inhomogeneous formation
There are the anisotropy that vapor chamber is spread by traditional SAGD, and the stratum that microwave can realize that steam is easy to spread is heated less,
Add heat in the stratum that steam is difficult to spread；It should be noted that steam herein not only refers to the steaming that horizontal well 3 injects
Vapour further includes the steam that microwave heating generates stratum raw water；It is certain to allow at the same time it can also according to the design method of exploitation
Subterranean formation zone heating is more, and certain subterranean formation zone heating are few, to obtain the vapor chamber of given position, size and shape development.And it is warm
Degree inductor is equivalent to the temperature in perception stratum each region, come to ground staff with referring to adjusting microwave power.It can open
Hair, the design of straight well 6 actually provide a channel of a understanding stratum upper space, the temperature to technical staff
Sensing device can also expand increase or be substituted for other sensing devices, carry out further to other physical chemistry situations on stratum
It obtains.
Preferably, the direction of the launch of the microwave launcher 8 is adjustable, and the reflection direction of microwave reflection device 9 is adjustable
Section.The microwave launcher 8 and microwave reflection device 9 connect ground control equipment 7.In drilling process before, well logging
Equipment such as earth inductor, acceleration induction device and gyroscope collect all parameters of downhole drill bit, the parameter in drilling
Guaranteeing that the contraposition of horizontal well 1, straight well 6 align, traditional SAGD is also required to first have to guarantee that horizontal well 1 is parallel to each other, so
Well pattern structure, which can simulate, to be come.Microwave launcher 8 is opened, Microwave emission is adjusted according to the feedback of microwave reflection device 9
And reflection angle.Certain the utility model also inspires installation site sensing device on the outside of the borehole wall of straight well 6 and horizontal well 1 naturally
Such as underground is more accurately located using mechanical wave or particle wave.
As shown in Figures 2 and 3, it should be noted that an inspiration as the utility model is the mode for setting up well pattern
Depending on oil reservoir size, the little occasion of oil reservoir range can longitudinal overlapping mining group 10, such as Fig. 2；Oil reservoir range is then adopted greatly
With vertical and horizontal overlapping mining group 10, such as Fig. 3.
Use the recovery method of the exploitation mechanism, comprising:
S1. microwave preheating stage: the microwave launcher 8 of horizontal well 3 and lower horizontal well 2 in unlatching, in conjunction with well pattern structure
The direction of microwave launcher 8 and microwave reflection device 9 is adjusted with the practical reflection case of microwave；Microwave is filled due to microwave reflection
Toward interflection between 1 well of horizontal well under the action of setting 9, the seepage channel of 1 well formation of horizontal well is got through in preheating；Microwave heating
Original aqueous in layer, the steam that water is formed after vaporization encounters crude oil condensation, and viscosity reduces after crude oil is heated, and condensed
Steam water and the rapid vaporization after absorbing microwave energy；Open the microwave launcher 8 of straight well 6 simultaneously, in conjunction with well pattern structure and
The practical reflection case of microwave adjusts the direction of microwave launcher 8 and microwave reflection device 9；Microwave is due to microwave reflection device
Toward interflection between 6 well of straight well under the action of 9, the seepage channel of 6 well formation of straight well is got through in preheating；
S2. after the connection of 1 well formation of horizontal well, steam is injected in upper horizontal well 3, temperature between well is established in collaboration microwave heating
, it gets through between well and exploits channel；
S3. production phase: the viscosity of crude oil drops to minable parameter area, goes out crude oil, lower horizontal well 3 from lower horizontal well
Crude oil out.
It should be noted that the temperature of well formation is real-time monitoring in recovery process, once temperature lowers,
The viscosity of crude oil is excessive, then opens microwave heating, or can also inject steam simultaneously and accelerate heating, guarantees the controllable of oil extraction
Property and stability.In particular, it should be pointed out that steam is over-the-counter in addition to assisting microwave formation temperature, the water of steam condensation is alternatively arranged as
The medium of conducts microwaves heat, steam meet viscous crude condensation, viscosity of thickened oil reduction, while condensed water and since microwave action vaporize,
Medium as conducts microwaves energy repeatedly.
Meanwhile in the exploitation mechanism use process, multielement hot fluid, multi-element fluid are injected from horizontal well 1 in the production phase
The stratum of production zone is kept the temperature and is reduced viscosity of crude；Multielement hot fluid is the organic matters such as natural gas or crude oil complete
The product generated after full burning usually contains the CO2 and a small amount of impurity of 80% ~ 85% N2 and 15% ~ 20%.Multielement hot fluid drives
Oily process is mainly manifested in: multielement hot fluid is dissolved in after crude oil, can make crude oil volume expansion, so that elastic energy is increased,
To be conducive to the extraction of crude oil.Since the heat drop of the dissolution of CO2, the foam oil that N2 is formed and steam is viscous, original is greatly reduced
The viscosity of oil, improves mobility ratio, improves the recovery ratio of heavy crude reservoir.After injecting gas in oil reservoir, gas can be on oil reservoir
Portion trapping, inhibit steam overlap, and by gas drive downwards and between gas and viscous crude gravity difference effect will heat
Viscous crude displacement to producing well produce；Gas concentrates on stratum cap rock, the heat exchange between steam and cap rock is isolated, so that steam
Heat all absorbed by formation at target locations.
During the exploitation mechanism, also relates to measurement straight well 6 and horizontal well 1 carries out formation temperature, subsequent basis
The temperature value of measurement optimizes the power of the microwave heating of Different Strata position so that vapor chamber according to given position, size and
Shape development, while making vapor chamber uniform expansion.
It can be concluded that straight well net and horizontal-well network are both provided with microwave heating, reduce traditional SAGD method steam
The use of amount, reduces cost of winning；Microwave emission and microwave reflection device make microwave energy almost all by between certain well
Formation absorption, can rapidly pre-warming stratum, greatly shorten the time for getting through exploitation channel, while promoting the exploitation of unit time
Amount；The microwave heating of straight well net makes the range for heating stratum wider, shortens production time and improves crude output；Straight well net
The temperature that stratum can be monitored at any time with the temperature inductor of horizontal-well network arrangement, using microwave power-adjustable size, according to stratum
The case where realize that vapor chamber is developed according to given position, size and shape, while making vapor chamber uniform expansion.
Disclosed above be only the preferred embodiment of the utility model, cannot limit the utility model certainly with this
Interest field, therefore according to the utility model claims make ground equivalent variations, still fall within the scope of the utility model.
Claims (7)
1. a kind of super-heavy oil deposit exploits mechanism, including at least one set of exploitation group (10), every group of exploitation group (10) include:
Horizontal well (1) comprising upper horizontal well (3) and lower horizontal well (2), horizontal well (1) have horizontal segment (5) and vertical section
(4)；
It is characterized in that, the exploitation mechanism further includes straight well (6), straight well (6) is arranged near horizontal well (1)；Straight well (6)
Microwave launcher (8) and microwave reflection device (9), microwave reflection dress of the microwave between straight well two-by-two are installed on the outside of the borehole wall
It sets between (9) toward interflection.
2. a kind of super-heavy oil deposit as described in claim 1 exploits mechanism, it is characterised in that: the borehole wall of the horizontal segment (5)
Outside is equipped with microwave launcher (8) and microwave reflection device (9), and microwave is between upper horizontal well (3) and lower horizontal well (2)
Microwave reflection device (9) between toward interflection.
3. a kind of super-heavy oil deposit as claimed in claim 2 exploits mechanism, it is characterised in that: the borehole wall of the vertical section (4)
Outside is equipped with microwave launcher (8) and microwave reflection device (9), and microwave is in vertical section (4) and closes on the straight of vertical section (4)
Toward interflection between microwave reflection device (9) between well (6).
4. such as a kind of described in any item super-heavy oil deposit exploitation mechanisms of claims 1 to 3, it is characterised in that: the microwave hair
The direction of the launch of injection device (8) is adjustable, and the reflection direction of microwave reflection device (9) is adjustable.
5. such as a kind of described in any item super-heavy oil deposit exploitation mechanisms of claims 1 to 3, it is characterised in that: the microwave hair
Injection device (8) and microwave reflection device (9) connection ground control equipment (7).
6. a kind of super-heavy oil deposit as described in claim 1 exploits mechanism, it is characterised in that: the straight well (6) and/or vertical
The sensing device of acquisition stratum physical and chemical state is installed on the outside of section (4) borehole wall.
7. a kind of super-heavy oil deposit as claimed in claim 6 exploits mechanism, it is characterised in that: the straight well (6) and/or vertical
Temperature sensing device is installed on the outside of section (4) borehole wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820833157.6U CN208252102U (en) | 2018-05-31 | 2018-05-31 | A kind of super-heavy oil deposit exploitation mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820833157.6U CN208252102U (en) | 2018-05-31 | 2018-05-31 | A kind of super-heavy oil deposit exploitation mechanism |
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| CN208252102U true CN208252102U (en) | 2018-12-18 |
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| CN201820833157.6U Expired - Fee Related CN208252102U (en) | 2018-05-31 | 2018-05-31 | A kind of super-heavy oil deposit exploitation mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487887A (en) * | 2018-05-31 | 2018-09-04 | 西南石油大学 | A kind of super-heavy oil deposit exploitation mechanism and method |
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2018
- 2018-05-31 CN CN201820833157.6U patent/CN208252102U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487887A (en) * | 2018-05-31 | 2018-09-04 | 西南石油大学 | A kind of super-heavy oil deposit exploitation mechanism and method |
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Granted publication date: 20181218 Termination date: 20210531 |